Speaker



FIG. 1 is a perspective view of the speaker;

FIG. 2 is a front view of the speaker;

FIG. 3 is a back view of the speaker

FIG. 4 is a left side view of the speaker;

FIG. 5 is a right side view of the speaker;

FIG. 6 is a top view of the speaker; and,

FIG. 7 is a bottom view of the speaker.

The broken lines shown are included for the purpose of illustrating portions of the speaker that form no part of the claim. 

CLAIM What is claimed is the ornamental design for a speaker, as shown and described. 